Yuav ua li cas yog lub npe rau ib lub computer ntaus ntawv kev sib raug zoo nrog lwm leej lwm tus?

Yuav ua li cas yog ib tug ntaus ntawv rau cov interconnection ntawm computers nrog rau lwm cov computers? Zoo, yog hais tias qhov teeb meem yog spinning nyob rau hauv kuv lub taub hau, yog li ua nws txoj cai, koj nyeem qhov tsab xov xwm. Yog li ntawd, rau ib tug computer ntaus ntawv interconnection nrog lwm leej lwm tus - lub adapter (nyob rau hauv lwm yam lus, ib tug network card). Yuav ua li cas yog nws? Yuav ua li cas yog nws ua hauj lwm? Yuav ua li cas yog cov kev khiav dej num nws ua? Tag nrho cov lus nug no yuav tsum nyob lub teb nyob rau hauv no tsab xov xwm.

Yuav ua li cas yog Adapter

Yog li ntawd hu ua peripheral computer ntaus ntawv, uas ua haujlwm ncaj nraim nrog cov ntaub ntawv kis tau tus mob nruab nrab. Ua tsaug rau nws, ncaj qha los yog nrog rau kev siv lwm yam kev sib txuas lus khoom, muaj yog networking nrog rau lwm cov computers.

Qhov no ntaus ntawv daws cov teeb meem ntawm kev ntseeg binary cov ntaub ntawv pauv, uas yog nyob rau hauv daim ntawv ntawm cov coj electromagnetic Pib ntsais koj teeb. Lawv kis tau tus mob yog tau siv rau lwm mus. Txij li thaum lub adapter yog lub maub los computer, nws ua hauj lwm nyob rau hauv cov kev tswj ntawm qhov kev tsim nyog neeg tsav tsheb rau koj khiav hauj lwm qhov system. Sib cais ntawm kev khiav dej num ntawm lawv tej zaum yuav sib txawv, nyob ntawm seb qhov kev siv.

txoj kev loj hlob ntawm adapters

Yog li ntawd, peb twb paub tias tus ntaus ntawv rau ib lub computer interconnection nrog lwm leej lwm tus - qhov no adapter. Tam sim no cia tham me ntsis txog xyuas yuav ua li cas lub tshuab tau hloov zuj zuj.

Tus thawj LAN adapters nrog rau ib tug coaxial cable ya, noj tag nrho cov ntau yam ntawm kev sib txuas lus cov khoom. Ua tsaug rau lawv thiab cov computer sis raug zoo. Ces siv lub ncaj sis ntawm qhov sib txawv hluav taws xob computers.

Qhov no technology yog tseem siv, tiam sis feem ntau niaj hnub qauv thiab muab ntau muaj ib tug xov tooj ntawm tshwj xeeb kev sib txuas lus kiag li lawm (eg, choj, hloov, hub los yog router). Lawv txheeb tawm ib feem ntawm kev khiav dej num nrog rau kev hwm mus ntws tswj.

yuam kev txoj kev ntseeg

Koj muaj peev xwm feem ntau hnov los yog nyeem hais tias ib tug ntaus ntawv rau interconnection nrog rau lwm cov computer - lub processor. Paub hais tias qhov no yog tsis muaj tseeb. Tus ntaus ntawv rau cov interconnection ntawm ib lub computer mus rau lwm yam yog hu ua ib tug adapter, los yog ib tug network card, tiam sis tsis rau lwm txoj kev! Mus los ntawm ib tug delusion, nws yog tsis paub, tab sis yog ib tug neeg ua yuam kev, nws yuav zoo dua rau kev txhim kho nws.

Muaj nuj nqi tsim thiab coding ntawm cov ntaub ntawv

adapter muaj nuj nqi lus dag nyob rau hauv lub fact tias cov ntaub ntawv yuav tsum tau kis nyob rau hauv daim ntawv ntawm ib tug ncej muaj ib tug tej yam hom ntawv. Nyob rau hauv cov ntaub ntawv no, ib tug coding twb paub lawm cov kev ntawm cov ntaub ntawv nrog rau cov tsim nyog Pib ntsais koj teeb li hais tias lawv yuav tsum tau noj nyob rau lwm yam sab, tab sis nws yuav tsum tsis txhob poob lawm, thiab muab ntim rau hauv lawv lub ntsiab lus.

Cia peb nyob rau hauv ntau yam nyob rau hauv no. Lub thav duab ob peb nyiaj siv ua haujlwm teb muaj. Cov no muaj xws li qhov chaw nyob ntawm lub computer uas koj xav kom hloov cov ntaub ntawv thiab cov checksum ntawm txhua tus ncej. Nyob rau nws yuav kos cov lus xaus txog cov correctness ntawm cov ntaub ntawv muab. Hais txog coding nws yuav tau hais tias nws cov ntsiab lus yog kom kov yeej lub cuam thiab kev muab cov txais apparatus ntawm cov ntaub ntawv paub tuition.

Tseem muaj ib co kev cov ntsiab lus. Yog li, thaum uas siv cov ib broadband cable network adapters tsis nyob rau hauv kev siv lub teeb liab tes taws los piav. Vim qhov no yog tsuas yog yuav tsum tau thaum lub kis tau tus mob mus rau narrowband kev sib txuas lus kab (ib tug xov tooj lub suab zaus raws yuav raug raws li xws li).

muaj nuj nqi nkag

Cov nram qab no muaj nuj nqi yog siv nyob rau hauv nrog ib tug cov ntaub ntawv tshaj tawm hauv xov ib puag ncig. Nws yog siv nyob rau hauv tus neeg mob uas koj yuav tsum mus saib nyob rau hauv ib tug tej yam algorithm.

Qhov no yog tsim nyog vim hais tias ntawm lub exploitation ntawm qhia cov ntaub ntawv tshaj tawm hauv xov ib puag ncig. Tab sis muaj yog ib tug ib txwm mus tsis kam txais no mus kom ze rau hauv dej siab ntawm tus kheej kev computer kev sib txuas lus raws nrog rau cov kev sib txuas lus network pab kiag li lawm (zoo li dab tsi yog ua li cas nyob rau hauv-line telephony).

hloov dua siab tshiab thiab synchronization muaj nuj nqi

Conversion thiab synchronization yog yuav tsum tau mus muab cov ntaub ntawv nyob rau hauv ib tug tshwmsim daim ntawv. Yog li ntawd, ua tsaug rau lub adapter, cov ntaub ntawv yuav tsum hloov dua siab tshiab los ntawm serial rau thaum uas tig mus, thiab vice versa. Qhov no yog tsim nyog vim rau qhov tseeb hais tias mus pab txhawb lub synchronization ntawm qhov teeb meem (thiab kuj yuav txo tau tus nqi ntawm kev sib txuas lus kab) cov ntaub ntawv yog kis tau maj - ib me ntsis tom qab lwm. Kev sib piv - nyob rau hauv lub computer cov ntaub ntawv tsiv byte los ntawm byte.

Hais txog synchronization yuav tau hais tias nws yog tsim nyog los tswj ib qhov kev sis raug zoo teeb meem-receiver thiab cov ntaub ntawv transmitter. Qhov no adapter tau ntse solved qhov teeb meem, ua tsaug rau qhov tshwj xeeb coding txoj kev uas tsis txhob siv ntxiv caij tsheb npav nrog synchronization moos.

Tsaug rau cov qauv no yooj yim muab periodic hloov nyob rau hauv lub teeb liab lub xeev uas yog kis tau. Nyob rau hauv tas li ntawd mus muaj teeb meem nrog cov synchronization ntawm lub ntsis theem, adapter solved teeb meem zoo li thiab txheeb ze bytes thiab ntas.

Kev nta

Paub qhov txawv adapters rau sab hauv cov ntaub ntawv lub tsheb npav thiab cov technology siv. Yog li ntawd, yog hais tias peb tham txog cov thawj cov ntaub ntawv, ces tej zaum yuav muaj cov nram qab no:

• ISA;
• EISA;
• MCA;
• PCI.

Nrog lub network technology yog tsis yog li ntawd yooj yim. Feem ntau ib tug adapter txhawb ib tug ntawm lawv. Tab sis, dua li no, cov ntaub ntawv yog kis tau tsis muaj teeb meem. Qhov no yog tiav ua tsaug rau lub fact tias siv ntau xov xwm tshaj tawm hauv xov cov ntaub ntawv. Piv txwv li, ib qho ntawm feem nrov technologies - Ethernet - yuav xyuam xim kom muaj coaxial thiab fiber optic cables los yog unshielded cov khub.

Yog hais tias lub adapter yuav pab txhawb nqa tsuas yog ib qho nruab nrab yog siv converters thiab transceivers. Yuav ua li cas yog cov pab kiag li lawm?

Transceivers thiab converters

Transceivers kuj hu ua transceivers. Lawv yog ib feem ntawm lub network adapter thiab sawv cev rau nws davhlau ya nyob twg, uas yuav qhib rau lub cable. Txawm tias, nws yuav tsum tau muab sau tseg hais tias lawv tau Ameslikas muab tso rau hauv cables (yog hais tias peb xav txog cov thawj Ethernet standard), tab sis, ces nws txiav txim siab tias qhov ntau yooj yim yog tso nws nyob rau hauv adapter.

Es tsis txhob, lub transceiver yuav siv tau txiaj. Nws koom nyob rau hauv lub sib haum ntawm cov ntaub ntawv los ntawm kev siv ntau yam ntaub ntawv tshaj tawm hauv xov tej kev kawm. Ua piv txwv li yuav ua tau ib lub zos lub tsev network uas siv ib tug twisted khub coaxial cable.

xaus

Zoo, cov neeg ua hauj lwm yog ua tiav - terminology thiab nta piav adapters. Tam sim no, tsis yog yuav tsum nug txog lub npe ntawm lub ntaus ntawv mus rau interconnect ib tug computer nrog rau lwm cov computers. Nyob rau hauv tas li ntawd, peb ntsia dab tsi zog yog ua los ntawm cov adapters, dab tsi txoj kev ntawm txoj kev loj hlob lawv tau ploj mus, thiab yuav ua li cas ua tau zoo tuaj tsis loj hloov. Rau hauv-tob txoj kev tshawb no ntawm cov ntaub ntawv muab yog tsis txaus threads, tab sis raws li thaum pib ntawm txoj kev tshawb ntawm qhov kev siv ntawm lub cev cov ntaub ntawv, nws yuav pab tau rau koj.